private void U_LoadPlanillas(int nInit)
        {
            if (nInit == 1)
            {
                cboTipo.Text = "Normal";
            }

            Examinar.AutoGenerateColumns = false;
            var BL = new tb_plla_numeracionpllaBL();
            var BE = new tb_plla_numeracionplla();
            BE.perianio = VariablesPublicas.perianio;
            BE.norden = 1;
            Examinar.DataSource = BL.CONSULTA_SELECCION(VariablesPublicas.EmpresaID, BE).Tables[0];

            VariablesPublicas.PintaEncabezados(Examinar);

            var ncol = 0;
            for (ncol = 0; ncol <= Examinar.ColumnCount - 1; ncol++)
            {
                Examinar.Columns[ncol].SortMode = DataGridViewColumnSortMode.Automatic;
            }
            if (cboTipo.Text.ToUpper() == "NORMAL")
            {
                Examinar.Columns["Column8"].DataPropertyName = "plla_sel";
            }
            else
            {
                Examinar.Columns["Column8"].DataPropertyName = "he_sel";
            }

            Examinar.Columns[6].Visible = false;
            Examinar.Columns[7].Visible = false;
            Examinar.Columns[8].Visible = true;
        }